<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="分类名称" prop="name">
        <el-input v-model="queryParams.name" placeholder="请输入分类名称" clearable size="small" @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item label="状态" prop="status">
        <el-select v-model="queryParams.status" placeholder="分类状态" clearable size="small" style="width: 240px">
          <el-option v-for="dict in statusOptions" :key="dict.dictValue" :label="dict.dictLabel" :value="dict.dictValue" />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd">新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="info" plain icon="el-icon-sort" size="mini" @click="toggleExpandAll">展开/折叠</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="categoryList" row-key="categoryId" :tree-props="{children: 'children', hasChildren: 'hasChildren'}" :default-expand-all="isExpandAll" v-if="refreshTable">
      <el-table-column prop="name" label="分类名称" :show-overflow-tooltip="true" width="250"></el-table-column>
      <el-table-column prop="sort" label="排序" width="200"></el-table-column>
      <el-table-column prop="status" label="状态" :formatter="statusFormat" width="200"></el-table-column>
      <el-table-column label="创建时间" align="center" prop="createTime">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)">修改</el-button>
          <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAdd(scope.row)">新增</el-button>
          <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改分类对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="680px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="100px">
        <el-row>
          <el-col :span="24">
            <el-form-item label="上级分类">
              <treeselect v-model="form.pid" :options="categoryOptions" :normalizer="normalizer" :show-count="true" placeholder="选择上级分类" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="分类名称" prop="name">
              <el-input v-model="form.name" placeholder="请输入分类名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="sort">
              <el-input-number v-model="form.sort" controls-position="right" :min="0" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="状态">
              <el-radio-group v-model="form.status">
                <el-radio v-for="dict in statusOptions" :key="dict.dictValue" :label="dict.dictValue">{{dict.dictLabel}}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="是否个人">
              <el-radio-group v-model="form.individual">
                <el-radio v-for="dict in personalStatus" :key="dict.dictValue" :label="dict.dictValue">{{dict.dictLabel}}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCategory, addCategory, updateCategory, getCategory, delCategory } from "@/api/posts/category";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
  name: "Category",
  components: { Treeselect },
  data () {
    return {
      // 分类树选项
      categoryOptions: [],
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        name: [
          { required: true, message: "分类名称不能为空", trigger: "blur" }
        ],
        sort: [
          { required: true, message: "分类顺序不能为空", trigger: "blur" }
        ]
      },
      // 是否显示弹出层
      open: false,
      // 弹出层标题
      title: "",
      // 遮罩层
      loading: false,
      // 显示搜索条件
      showSearch: true,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        name: undefined,
        phoneNumber: undefined,
        status: undefined
      },
      // 日期范围
      dateRange: [],
      // 状态数据字典
      statusOptions: [
        { dictLabel: "正常", dictValue: "0" },
        { dictLabel: "停用", dictValue: "1" }
      ],
      // 是否个人
      personalStatus: [
        { dictLabel: "是", dictValue: "0" },
        { dictLabel: "否", dictValue: "1" }
      ],
      // 是否展开，默认全部折叠
      isExpandAll: false,
      // 重新渲染表格状态
      refreshTable: true,
      // 分类表格树数据
      categoryList: [],
    }
  },
  created () {
    this.getList();
  },
  methods: {
    /** 查询分类列表 */
    getList () {
      this.loading = true;
      listCategory(this.queryParams).then(response => {
        this.categoryList = this.handleTree(response.data, "categoryId", "pid");
        this.loading = false;
      });
    },
    /** 搜索按钮操作 */
    handleQuery () {
      this.loading = true;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery () {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    /** 新增按钮操作 */
    handleAdd (row) {
      this.reset();
      this.getTreeselect();
      if (row != null && row.categoryId) {
        this.form.pid = row.categoryId;
      } else {
        this.form.pid = 0;
      }
      this.open = true;
      this.title = "添加分类";
    },
    /** 修改按钮操作 */
    handleUpdate (row) {
      this.reset();
      this.getTreeselect();
      getCategory(row.categoryId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改分类";
      });
    },
    /** 删除按钮操作 */
    handleDelete (row) {
      var msg = '';
      if (row.children) {
        msg = '存在子选项，是否确认删除名称为"' + row.name + '"和它的子选项'
      } else {
        msg = '是否确认删除名称为"' + row.name + '"的数据项'
      }
      this.$confirm(msg, "警告", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(function () {
        return delCategory(row.categoryId);
      }).then(() => {
        this.getList();
        this.msgSuccess("删除成功");
      }).catch(() => { });
    },
    /** 提交按钮 */
    submitForm () {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.categoryId != undefined) {
            updateCategory(this.form).then(response => {
              this.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCategory(this.form).then(response => {
              this.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    // 取消按钮
    cancel () {
      this.open = false;
      this.reset();
    },
    /** 转换分类数据结构 */
    normalizer (node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.categoryId,
        label: node.name,
        children: node.children
      };
    },
    /** 展开/折叠操作 */
    toggleExpandAll () {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
        this.refreshTable = true;
      });
    },
    // 分类状态字典翻译
    statusFormat (row) {
      return this.selectDictLabel(this.statusOptions, row.status);
    },
    // 表单重置
    reset () {
      this.form = {
        categoryId: undefined,
        pid: 0,
        name: undefined,
        sort: undefined,
        individual: "0",
        status: "0"
      };
      this.resetForm("form");
    },
    /** 查询分类下拉树结构 */
    getTreeselect () {
      listCategory().then(response => {
        this.categoryOptions = [];
        const category = { categoryId: 0, name: '主类目', children: [] };
        category.children = this.handleTree(response.data, "categoryId", "pid");
        this.categoryOptions.push(category);
      });
    }
  }
}
</script>

<style>
</style>